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defocusing of beam [电] 光束去焦
Path of beam of light, nothing is seen. 如果光束通道上没有东西,就什么也看不到。
New method for power saving of beam pumping units. 游梁式抽油机节能新技术探讨。
Simulation results show phase-diversity method can accurately retrieve the wavefront and defocusing of one wavelength is optimal. 模拟研究结果表明，相位差法可以较准确的恢复出波前相位，并且最优化的离焦波面差为一个波长。
The power of each brain wave of BEAM lowers with time. BEAM各脑波功率值与时降低。
Analysis of fatigue reliability of crank pin of beam pump unit. 游梁式抽油机曲柄销疲劳可靠性分析
Research results show that the incline and defocusing of reflection plane in optical instrument (such as telescope and camera) reduce the intensity of the "Cat"s eye" reflection. 研究结果表明:回波强度受光学仪器内部反射面倾斜和离焦及光学镜头相对孔径的影响较大,扫描光束的入射角和物镜相对孔径等因素对回波强度也有一定影响。
The beam of the searchlight pierced the darkness. 探照灯的光柱射入黑暗中。
Research results show that the relative aperture of optical lens,the incline and defocusing of reflection plane in TV seeker optical system reduce the intensity of the "cat s eye" reflection. 以电视导引头光学系统为例,运用矩阵光学追迹法对影响“猫眼效应”回波强度的因素进行了定性和定量的分析。
By means of a Reyleigh-Ritz optimization procedure, the closed form solutions for the evolution of beams in both defocusing and self-focusing cases can be obtained. 运用瑞利-里兹方法求解其变分方程，分别求出光束在自散焦和自聚焦介质中的变分解。
The beam has a thickness of 3 inches. 这根梁厚3英寸。
Never heard of her. You're off the beam. 我从来没有听说过这个人，你搞错了吧。
Self-focusing and defocusing of narrow radio beam in lower ionosphere 无线电窄波束在低电离层中的聚焦和散焦
The size of beam spot of EBW is important factor which affects weld configuration. 电子束焊接焦点的大小是影响焊缝成型的重要因素。
How can I persuade you of my sincerity? 我如何能够让你相信我的诚意？
There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
The evolution of beam size and pulse duration in a cavity of Ti: sapphire femtosecond laser is presented by means of simulated calculation. 通过数值计算模拟了掺钛蓝宝石飞秒激光器谐振腔中光斑和脉冲宽度在自锁模过程中的演变。